Dtc P0122 - Mazda 2002 6 Workshop Manual

STEP
15 INSPECT PCM TERMINALS FOR ELECTRICAL
CORROSION
• Disconnect PCM connector.
• Inspect for electrical corrosion on PCM and
PCM connector male and female terminals.
• Is any electrical corrosion found?
16 VERIFY TROUBLESHOOTING OF DTC P0121
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Start engine.
• Clear DTC from PCM memory using WDS or
equivalent.
• Access RPM, TP and MAF PIDs using WDS or
equivalent.
• Verify TP PID is reading below 50% while MAF
PID is below 4.8 g/s {0.6 lb/min.} and RPM
PID is above 500 rpm.
• Is pending code the same as DTC present?
17 VERIFY AFTER REPAIR PROCEDURE
• Is there any DTC present?
End Of Sie

DTC P0122

DTC P0122 TP circuit low input
• If PCM detects TP sensor voltage at PCM terminal 2A is below 0.1 V while engine running, PCM
determines that TP circuit has malfunction.
Diagnostic support note
• This is a continuous monitor (CCM).
DETECTION
• MIL illuminates if PCM detects the above malfunction conditions in first drive cycles.
CONDITION
• PENDING CODE is available if PCM detects the above malfunction condition.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.
• TP sensor malfunction
• Connector or terminal malfunction
POSSIBLE
• Open circuit between TP sensor terminal B and PCM terminal 2A
CAUSE
• Short to ground circuit between TP sensor terminal B and PCM terminal 2A
• Open circuit between TP sensor terminal C and PCM terminal 2K
F–100
ON-BOARD DIAGNOSTIC
INSPECTION
Yes Repair terminal, then go to next step.
No Go to next step.
Yes Replace PCM, then go to next step.
(See F–43 PCM REMOVAL/INSTALLATION.)
No Go to next step.
Yes Go to applicable DTC troubleshooting.
(See F–67 DTC TABLE.)
No Troubleshooting completed.
ACTION
A6E397001084W19